高压蒸汽中的水可快速溶解强碱,局部产生高浓度强碱环境,在此条件下,强碱能较快地与锂云母反应,达到高效碱溶的效果。通过对蒸汽压力、锂云母与强碱的质量比、反应时间、锂云母孔径对锂云母中锂的转化率的影响研究,确立了高压蒸汽法处理锂云母提锂工艺优化条件：蒸汽压力为9 MPa、锂云母与强碱的质量比为1∶1.2、反应时间为2 h、锂云母粒度为150 μm,在该条件下,锂云母中锂的转化率可以达到96.9%。

Water in high pressure steam could dissolves strong alkali quickly,and a strong alkali environment of high conc-entration is locally created.Under the conditions,strong alkali can react with lepidolite quickly,and the effect of efficient alkali solution is obtained.The optimum conditions for extracting lithium from lepidolite by high pressure steam were deter-mined.The results indicated that conversion rate of lepidolite was 96.9% under the optimum conditions including the steam pressure of 9 MPa,the mass ratio of lepidolite to alkali of 1∶1.2,the reaction time of 2 h and the particle size of lepidolite of 150 μm .